package com.xujl.fastlib.widget;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

/**
 * 正方形的RelativeLayout
 */
public class SquareRelativeLayout extends RelativeLayout {
    public SquareRelativeLayout (Context context) {
        super(context);
    }

    public SquareRelativeLayout (Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public SquareRelativeLayout (Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec) {


        //设置自己测量结果
        setMeasuredDimension(getDefaultSize(0, widthMeasureSpec), getDefaultSize(0, heightMeasureSpec));


        /**
         * 测量子View的
         */
        int childWidthSize = getMeasuredWidth();
        //高度与宽度一样
        widthMeasureSpec = MeasureSpec.makeMeasureSpec(childWidthSize, MeasureSpec.EXACTLY);
        heightMeasureSpec = widthMeasureSpec;

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}
